When appropriate, this term can be used in ATIS broadcasts in lieu of detailed weather information.

"CAVOK" may appear within METAR format weather report strings in place of the standard "Visibility Group (VVVVVSM)" as defined in Section 12.6.6 of "Federal Meteorological Handbook No. 1" (September 2005). However, it is to be noted that implementations of METAR in the USA may differ from that in other international locations, possibly to the extent that CAVOK is completely excluded in one implementation or the other.

While it does not specify in ICAO documents that CAVOK refers to AGL, TAF and METAR cloud heights are reported in AGL, so CAVOK, therefore, refers to AGL.